CN210062816U - Poor anticollision early warning system in vehicle - Google Patents
Poor anticollision early warning system in vehicle Download PDFInfo
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- CN210062816U CN210062816U CN201920808420.0U CN201920808420U CN210062816U CN 210062816 U CN210062816 U CN 210062816U CN 201920808420 U CN201920808420 U CN 201920808420U CN 210062816 U CN210062816 U CN 210062816U
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Abstract
The utility model discloses a poor anticollision early warning system in vehicle, it includes two millimeter wave radars, host system and demonstration alarm module, two millimeter wave radars install at the left and right sides front portion of vehicle, and the detection face is to the side rear of vehicle, the last gyroscope of installing of host system, host system's signal input part is connected with the OBD mouth of millimeter wave radar, gyroscope and vehicle respectively, whether the interior poor scope of wheel that millimeter wave radar is used for measuring the vehicle both sides has the barrier, angular velocity when the gyroscope is used for measuring the vehicle and turns, the OBD mouth is used for providing the real-time speed of reading the vehicle, show alarm module and connect host system's signal output part for the audible-visual alarm when showing the distance value of barrier and vehicle side and taking place danger. The utility model discloses can detect the car when the turn, whether someone or other objects in the interior wheel difference region of vehicle to avoid the vehicle side collision accident because of interior wheel difference causes.
Description
Technical Field
The utility model relates to an initiative safety technology in car intelligent driving field, concretely relates to for avoiding the car when turning, because the poor early warning system of collision accident that probably causes in the vehicle in the wheel.
Background
In the turning process of the vehicle, because the motion tracks of the front wheel and the rear wheel are not coincident, the turning radius of the front wheel is larger than that of the rear wheel, and a certain difference value of the motion tracks of the front wheel and the rear wheel, namely the difference of the inner wheels, is formed. The inner wheel difference formed by the front wheel and the rear wheel of the vehicle is easy to cause vehicle collision accidents.
The driver needs to observe a plurality of directions when the vehicle turns, the poor part of wheel in the whole process of bending is observed all the time, and a lot of pedestrians and non-motor vehicle drivers lack enough attention to the poor danger of the wheel in the whole process of bending, often can enter and stay in the poor region of the wheel in order to wait for the vehicle to bend, and the collision accident is very easy to happen. Therefore, it is necessary to provide a warning system for the poor inner wheel area when the vehicle turns.
Disclosure of Invention
The utility model aims at providing a can detect the car when the turn, whether someone, non-motor or other objects exist in the interior wheel difference region of vehicle early warning system to avoid the vehicle side collision accident because of interior wheel difference causes.
In order to achieve the purpose, the utility model adopts the technical proposal that: the anti-collision early warning system for the difference of the inner wheels of the vehicle comprises two millimeter-wave radars, a main control module and a display alarm module, wherein the two millimeter-wave radars are arranged on the front parts of the left side and the right side of the vehicle, the detection surfaces face to the side rear part of the vehicle, a gyroscope is arranged on the main control module, the signal input end of the main control module is respectively connected with the millimeter-wave radars, the gyroscope and an OBD port of the vehicle, the millimeter-wave radars are used for measuring whether obstacles exist in the difference range of the inner wheels on the two sides of the vehicle, the gyroscope is used for measuring the angular speed of the vehicle during turning, the gyroscope and the angular speed transmit the measured signals to the main control module, and a main control template also reads the real-time speed of the vehicle through the OB; the display alarm module is connected with the signal output end of the main control module and used for displaying the distance value between the barrier and the side face of the vehicle and giving out sound and light alarm when danger occurs.
Furthermore, the millimeter wave radar and the OBD port of the vehicle are respectively connected with the main module through a CAN bus.
Further, the back of millimeter wave radar is: 90-millimeter wave radar horizontal detection angle/2.
Furthermore, the horizontal detection angle of the millimeter wave radar is 120 degrees, and the back of the millimeter wave radar and the side face of the vehicle body form an included angle of 30 degrees.
Furthermore, the main control module is also connected with the automobile steering signal lamp, left and right steering signals of the automobile are respectively connected into the switching value acquisition port of the main control module, and the main control module receives the steering signals of the steering signal lamp.
Further, the millimeter wave radar adopts a 77G millimeter wave radar with two-transmission and four-reception.
Further, the gyroscope adopts an Epson GGPM01LK gyroscope module.
Further, the main control module adopts a development board which takes STM32F407VET6 as a microcontroller.
The utility model has the advantages that: the system can realize the anti-collision early warning of the inner wheel difference of the vehicle by utilizing the installation and the matching of the millimeter wave radar, the main control module, the gyroscope and the display alarm module, and can also realize the lane changing auxiliary (blind spot detection) function. On the basis of not increasing any hardware cost, the system can be made as follows: poor anticollision early warning of wheel in the vehicle and supplementary integrated system of lane change. Therefore, the product cost can be reduced, the efficiency of the system is greatly improved, and more guarantees are provided for the safe running of the vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a block diagram of the present system.
Fig. 2 is a schematic view of a radar installation.
Fig. 3 is a schematic diagram of an inner wheel differential area and a millimeter wave radar scanning area.
Fig. 4a-d are diagrams of master control module hardware circuit connections.
FIG. 5 is a diagram showing the hardware circuit connections of the alarm module.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The system consists of two millimeter wave radars, a main control module (including a gyroscope), a display alarm module, a wire harness and mounting accessories, wherein the two millimeter wave radars are mounted at the front parts of the left side and the right side of the vehicle.
The two millimeter wave radars are respectively arranged on two sides of the front part of the vehicle according to a designed angle, the detection surface faces the side rear part of the vehicle, and the millimeter wave radars are connected with the main module through a CAN bus and used for information transmission between the radars and the main control module; the main control module is embedded with a gyroscope which is arranged in an automobile cab and used for measuring the angular speed of a vehicle during turning, providing basis for a system to calculate the real-time inner wheel difference value and determining the current early warning value according to the real-time inner wheel difference value system; the display alarm module is arranged at a proper position on the instrument desk, is connected with the main control module and is used for displaying the distance value between the barrier and the side surface of the vehicle and giving sound and light alarm when danger occurs; the OBD port of the vehicle is connected with the main control module through the CAN bus and used for reading the real-time speed of the vehicle by the system, calculating the turning radius of the vehicle by combining with gyroscope data and knowing the speed of the vehicle when lane change assistance is carried out. And left and right steering signals of the vehicle are respectively connected into the switching value acquisition ports of the main control module.
In the system, a domestic 77G millimeter wave radar with two-transmission and four-reception functions is used as a sensor; the gyroscope is a GGPM01LK gyroscope module of Epson, welded on the PBC board of the main control module and connected with the main control module circuit. The main control module adopts a development board which takes STM32F407VET6 as a microcontroller.
The millimeter wave radar has the characteristics of small volume, all weather, wide detection range and longer detection distance to people and non-motor vehicles, and can meet the detection requirements of various large vehicles on the inner wheel difference areas. Such as: millimeter-wave radars with a horizontal detection angle of 120 degrees are selected and installed on two sides of the front part of the vehicle, and the installation position of each millimeter-wave radar is located in the front part of the symmetrical outer side of the most protruding part on the side surface of the vehicle body. The back of the millimeter wave radar is arranged at an included angle of 30 degrees with the side face of the vehicle body, so that the inner side edge of a wave beam at a scanning angle of 120 degrees of the millimeter wave radar is just parallel to the side face of the vehicle body, no dead angle is ensured for the detection of the millimeter wave radar to the side rear part of the vehicle body, and the detection of the whole coverage of the inner wheel difference area of the vehicle can be realized.
When selecting for use the millimeter wave radar of other horizontal detection angles, the angle when its installation is: and the included angle between the back surface of the millimeter wave radar and the vehicle body is 90-millimeter wave radar horizontal detection angle/2. The installation ensures that the inner side edge of the wave beam at the horizontal scanning angle of the millimeter wave radar is just parallel to the side surface of the vehicle body, and ensures that the millimeter wave radar has no dead angle for detecting the side and the rear of the vehicle body.
The utility model discloses a working process: turning on an ACC of the vehicle, starting an anti-collision early warning system for the wheel difference in the vehicle, and activating a system warning function when the vehicle is ready to turn and a steering lamp on the steering side is turned on by a driver; the warning function of the system is also automatically activated if the driver does not turn the turn signal and when the gyroscope detects that the vehicle is turning. The system reads detection data of the millimeter wave radar on the side where the vehicle turns, and when the millimeter wave radar detects an obstacle behind the vehicle, the system calculates the vertical distance between the obstacle and the side face of the vehicle body by using the distance and the angle of the detected obstacle in the detection direction of the millimeter wave radar; the angular speed of the vehicle during turning is measured through the gyroscope, and the turning radius and the difference value of the inner wheel of the vehicle are calculated according to the real-time speed of the vehicle acquired from the OBD port of the vehicle. When the vertical distance between the barrier and the side face of the vehicle is smaller than the difference value of the inner wheels formed by turning the vehicle at the moment, the system can send out sound and light alarm to remind a driver of parking, steering and avoiding or remind personnel in the inner wheel difference area of backing and avoiding so as to avoid vehicle collision accidents possibly caused by the inner wheel difference.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (8)
1. The utility model provides a poor anticollision early warning system in vehicle which characterized in that: the system comprises two millimeter wave radars, a main control module and a display alarm module, wherein the two millimeter wave radars are arranged on the front parts of the left side and the right side of a vehicle, the detection surfaces face to the side rear part of the vehicle, a gyroscope is arranged on the main control module, the signal input end of the main control module is respectively connected with the millimeter wave radars, the gyroscope and an OBD (on-board diagnostics) port of the vehicle, the millimeter wave radars are used for measuring whether obstacles exist in the difference range of the inner wheels on the two sides of the vehicle, the gyroscope is used for measuring the angular speed of the vehicle during turning, the gyroscope and the main control module transmit the measured signals to the main control module, and the main control module also reads the real-time speed of the vehicle through the OBD; the display alarm module is connected with the signal output end of the main control module and used for displaying the distance value between the barrier and the side face of the vehicle and giving out sound and light alarm when danger occurs.
2. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: and the millimeter wave radar and the OBD port of the vehicle are respectively connected with the main module through a CAN bus.
3. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: the back of millimeter wave radar is with the contained angle of automobile body: 90-millimeter wave radar horizontal detection angle/2.
4. The in-vehicle wheel differential collision avoidance early warning system according to claim 1 or 3, wherein: the horizontal detection angle of the millimeter wave radar is 120 degrees, and the back of the millimeter wave radar and the side face of the vehicle body are arranged at an included angle of 30 degrees.
5. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: the main control module is also connected with an automobile steering signal lamp, left and right steering signals of the automobile are respectively connected into the switching value acquisition port of the main control module, and the main control module receives the steering signals of the steering signal lamp.
6. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: the millimeter wave radar adopts a 77G millimeter wave radar with two-sending and four-receiving.
7. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: the gyroscope adopts an Epson GGPM01LK gyroscope module.
8. The in-vehicle wheel differential collision avoidance early warning system of claim 1, wherein: the main control module adopts a development board which takes STM32F407VET6 as a microcontroller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920808420.0U CN210062816U (en) | 2019-05-31 | 2019-05-31 | Poor anticollision early warning system in vehicle |
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| CN201920808420.0U CN210062816U (en) | 2019-05-31 | 2019-05-31 | Poor anticollision early warning system in vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497832A (en) * | 2020-04-28 | 2020-08-07 | 深圳市国脉畅行科技股份有限公司 | Vehicle inner wheel difference risk monitoring method and device, computer equipment and storage medium |
| CN111516681A (en) * | 2020-05-12 | 2020-08-11 | 广东工贸职业技术学院 | High-speed driving safety early warning method and system for automobile based on inner wheel difference |
| CN113479262A (en) * | 2021-07-01 | 2021-10-08 | 南通理工学院 | Method for rapidly passing width-limiting pier |
| CN114407780A (en) * | 2022-03-03 | 2022-04-29 | 南京天安汽车电子科技股份有限公司 | Anti-collision early warning method for differential area of inner wheels of semitrailer based on double gyroscopes |
| TWI793637B (en) * | 2020-08-20 | 2023-02-21 | 為昇科科技股份有限公司 | Vehicle sensing system |
-
2019
- 2019-05-31 CN CN201920808420.0U patent/CN210062816U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497832A (en) * | 2020-04-28 | 2020-08-07 | 深圳市国脉畅行科技股份有限公司 | Vehicle inner wheel difference risk monitoring method and device, computer equipment and storage medium |
| CN111516681A (en) * | 2020-05-12 | 2020-08-11 | 广东工贸职业技术学院 | High-speed driving safety early warning method and system for automobile based on inner wheel difference |
| CN111516681B (en) * | 2020-05-12 | 2021-03-26 | 广东工贸职业技术学院 | High-speed driving safety early warning method and system for automobile based on inner wheel difference |
| TWI793637B (en) * | 2020-08-20 | 2023-02-21 | 為昇科科技股份有限公司 | Vehicle sensing system |
| CN113479262A (en) * | 2021-07-01 | 2021-10-08 | 南通理工学院 | Method for rapidly passing width-limiting pier |
| CN113479262B (en) * | 2021-07-01 | 2023-01-17 | 南通理工学院 | Method for rapidly passing width-limiting pier |
| CN114407780A (en) * | 2022-03-03 | 2022-04-29 | 南京天安汽车电子科技股份有限公司 | Anti-collision early warning method for differential area of inner wheels of semitrailer based on double gyroscopes |
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